<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>Document</title>
  </head>
  <body>
    <script src="vue.js"></script>
    <script>
      //创建一个可响应的对象数据 可用在渲染和计算属性
      //可作为最小限度的跨组件数据
      var count = Vue.observable({ count: 1 })
      // vuejs   2.6.11
      console.log(Vue.version)
      //
    </script>
  </body>
</html>
